Based on the Integration of Power Grid Topology Model of Distribution Network Fault Analysis Applications

2014 ◽  
Vol 1006-1007 ◽  
pp. 1194-1198
Author(s):  
De Quan Yao ◽  
Yong Tao ◽  
Hao Ran Yu
Keyword(s):  
Power Grid ◽  
Distribution Network ◽  
Fault Analysis ◽  
Repair Service ◽  
Equipment Operation ◽  
Customer Information ◽  
Grid Topology ◽  
Topology Model ◽  
Network Fault ◽  
Fault Information

On the basis of grid GIS platform, in the distribution network repair platform implementation is based on the integration of power grid topology model of distribution network fault analysis mechanism, a combination of customer information, grid electricity equipment operation information such as all kinds of information, the cause of the problem of fault repair service to provide intelligence, integration judge method, improve the accuracy of the fault forecasting speed, the fault information, improve the efficiency of fault repair, shorten fault repair time, reduce the loss of electricity, improve customer satisfaction.

Multi-PV Interfaced Distribution Network fault analysis method considering LVRT control strategy

2021 ◽  
Author(s):  
J. Deng ◽  
S. Liang ◽  
L. Z. Zhu ◽  
L. Yao ◽  
F. Duan ◽  
...  
Keyword(s):  
Control Strategy ◽  
Distribution Network ◽  
Fault Analysis ◽  
Analysis Method ◽  
Network Fault

An Application of Heuristic-Search Based Tree Model in Fault Analysis of Distribution Network

2012 ◽  
Vol 614-615 ◽  
pp. 1827-1832
Author(s):  
Cai Qiang Wang ◽  
Jie Li ◽  
Qing Bin Wang ◽  
Song Hu
Keyword(s):  
Power Supply ◽  
Heuristic Search ◽  
Fault Location ◽  
High Reliability ◽  
Distribution Network ◽  
Processing System ◽  
Fault Analysis ◽  
Power System Security ◽  
Tree Model ◽  
Network Fault

Along with the increase of need for high reliability of the power system security, it is important to build up a distribution fault analysis network and processing system, which can provide decision-making help for dispatching personnel. This paper introduced framework of the distribution network fault analysis and processing system, and analyze the fault location, isolation, generation and evaluation of power supply reconfiguration strategy. Tree model and Heuristic search were used for fault location and power supply route switching strategy.

Application of Fault Location Method Based on Multi-Source Fault Information in Repair of Distribution Network

2014 ◽  
Vol 1070-1072 ◽  
pp. 678-683
Author(s):  
Jing Zhou ◽  
Xing Zhang ◽  
Chen Jia
Keyword(s):  
Set Theory ◽  
Fuzzy Set Theory ◽  
Topological Structure ◽  
Fault Location ◽  
Low Voltage ◽  
Distribution Network ◽  
Location Method ◽  
Network Fault ◽  
And Storage ◽  
Fault Information

Fault location method based on multi-source fault information in repair of distribution network is proposed to make the precision and speed of fault location higher. Firstly a topology description and storage method which is appropriate to distribution network fault location is proposed. Then, based on the topological structure of distribution network, fault information on the distribution network is integrated processed. Fault information grouped and priorities are identified using the association of distribution equipment. Low-voltage fault location is achieved by applying fuzzy set theory in fault message omissions and misstatements situations. Finally, an example demonstrates the effectiveness of this method.

scholarly journals Topological Modeling Research on the Functional Vulnerability of Power Grid under Extreme Weather

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5183
Author(s):  
Banghua Xie ◽  
Changfan Li ◽  
Zili Wu ◽  
Weiming Chen
Keyword(s):  
Complex Network ◽  
Large Scale ◽  
Synergistic Effects ◽  
Power Grid ◽  
Extreme Weather ◽  
Characteristic Parameters ◽  
Complex Network Theory ◽  
Grid Topology ◽  
Topology Model ◽  
The Impact

The large-scale interconnection of the power grid has brought great benefits to social development, but simultaneously, the frequency of large-scale fault accidents caused by extreme weather is also rocketing. The power grid is regarded as a representative complex network in this paper to analyze its functional vulnerability. First, the actual power grid topology is modeled on the basis of the complex network theory, which is transformed into a directed-weighted topology model after introducing the node voltage together with line reactance. Then, the algorithm of weighted reactance betweenness is proposed by analyzing the characteristic parameters of the power grid topology model. The product of unit reliability and topology model’s characteristic parameters under extreme weather is used as the index to measure the functional vulnerability of the power grid, which considers the extreme weather of freezing and gale and quantifies the functional vulnerability of lines under wind load, ice load, and their synergistic effects. Finally, a simulation using the IEEE-30 node system is implemented. The result shows that the proposed method can effectively measure the short-term vulnerability of power grid units under extreme weather. Meanwhile, the example analysis verifies the different effects of normal and extreme weather on the power grid and identifies the nodes and lines with high vulnerability under extreme weather, which provides theoretical support for preventing and reducing the impact of extreme weather on the power grid.

Influence of distributed power supply in distributed power distribution network

2021 ◽  
pp. 1-8
Author(s):  
Xin Shen ◽  
Hongchun Shu ◽  
Min Cao ◽  
Nan Pan ◽  
Junbin Qian
Keyword(s):  
Power Supply ◽  
Power Distribution ◽  
Short Circuit ◽  
Power Grid ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Supplies ◽  
Power Distribution Network ◽  
Power Sources ◽  
Distributed Power

In distribution networks with distributed power supplies, distributed power supplies can also be used as backup power sources to support the grid. If a distribution network contains multiple distributed power sources, the distribution network becomes a complex power grid with multiple power supplies. When a short-circuit fault occurs at a certain point on the power distribution network, the size, direction and duration of the short-circuit current are no longer single due to the existence of distributed power, and will vary with the location and capacity of the distributed power supply system. The change, in turn, affects the current in the grid, resulting in the generation and propagation of additional current. This power grid of power electronics will cause problems such as excessive standard mis-operation, abnormal heating of the converter and component burnout, and communication system failure. It is of great and practical significance to study the influence of distributed power in distributed power distribution networks.

Sign in / Sign up

Export Citation Format

Share Document